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<center><h1>Average.java</h1></center><p><br>

Below is the syntax highlighted version of <a href = "Average.java">Average.java</a>.
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<pre><tt><span class="comment">/******************************************************************************</span>
<span class="comment"> *  Compilation:  javac Average.java</span>
<span class="comment"> *  Execution:    java Average &lt; data.txt</span>
<span class="comment"> *  Dependencies: StdIn.java StdOut.java</span>
<span class="comment"> *  </span>
<span class="comment"> *  Reads in a sequence of real numbers, and computes their average.</span>
<span class="comment"> *</span>
<span class="comment"> *  % java Average</span>
<span class="comment"> *  10.0 5.0 6.0</span>
<span class="comment"> *  3.0 7.0 32.0</span>
<span class="comment"> *  [Ctrl-d]</span>
<span class="comment"> *  Average is 10.5</span>
<span class="comment"> *</span>
<span class="comment"> *  Note [Ctrl-d] signifies the end of file on Unix.</span>
<span class="comment"> *  On windows use [Ctrl-z].</span>
<span class="comment"> *</span>
<span class="comment"> ******************************************************************************/</span>

<span class="preproc">package</span><span class="normal"> edu</span><span class="symbol">.</span><span class="normal">princeton</span><span class="symbol">.</span><span class="normal">cs</span><span class="symbol">.</span><span class="normal">algs4</span><span class="symbol">;</span>

<span class="comment">/**</span>
<span class="comment"> *  The </span><span class="keyword">&lt;tt&gt;</span><span class="comment">Average</span><span class="keyword">&lt;/tt&gt;</span><span class="comment"> class provides a client for reading in a sequence</span>
<span class="comment"> *  of real numbers and printing out their average.</span>
<span class="comment"> *  </span><span class="keyword">&lt;p&gt;</span>
<span class="comment"> *  For additional documentation, see </span><span class="keyword">&lt;a</span><span class="normal"> </span><span class="type">href</span><span class="symbol">=</span><span class="string">"http://algs4.cs.princeton.edu/11model"</span><span class="keyword">&gt;</span><span class="comment">Section 1.1</span><span class="keyword">&lt;/a&gt;</span><span class="comment"> of</span>
<span class="comment"> *  </span><span class="keyword">&lt;i&gt;</span><span class="comment">Algorithms, 4th Edition</span><span class="keyword">&lt;/i&gt;</span><span class="comment"> by Robert Sedgewick and Kevin Wayne.</span>
<span class="comment"> *</span>
<span class="comment"> *  </span><span class="type">@author</span><span class="comment"> Robert Sedgewick</span>
<span class="comment"> *  </span><span class="type">@author</span><span class="comment"> Kevin Wayne</span>
<span class="comment"> */</span>
<span class="keyword">public</span><span class="normal"> </span><span class="keyword">class</span><span class="normal"> </span><span class="classname">Average</span><span class="normal"> </span><span class="cbracket">{</span><span class="normal"> </span>

<span class="normal">    </span><span class="comment">// this class should not be instantiated</span>
<span class="normal">    </span><span class="keyword">private</span><span class="normal"> </span><span class="function">Average</span><span class="symbol">()</span><span class="normal"> </span><span class="cbracket">{</span><span class="normal"> </span><span class="cbracket">}</span>

<span class="normal">    </span><span class="comment">/**</span>
<span class="comment">     * Reads in a sequence of real numbers from standard input and prints</span>
<span class="comment">     * out their average to standard output.</span>
<span class="comment">     */</span>
<span class="normal">    </span><span class="keyword">public</span><span class="normal"> </span><span class="keyword">static</span><span class="normal"> </span><span class="type">void</span><span class="normal"> </span><span class="function">main</span><span class="symbol">(</span><span class="normal">String</span><span class="symbol">[]</span><span class="normal"> args</span><span class="symbol">)</span><span class="normal"> </span><span class="cbracket">{</span><span class="normal"> </span>
<span class="normal">        </span><span class="type">int</span><span class="normal"> count </span><span class="symbol">=</span><span class="normal"> </span><span class="number">0</span><span class="symbol">;</span><span class="normal">       </span><span class="comment">// number input values</span>
<span class="normal">        </span><span class="type">double</span><span class="normal"> sum </span><span class="symbol">=</span><span class="normal"> </span><span class="number">0.0</span><span class="symbol">;</span><span class="normal">    </span><span class="comment">// sum of input values</span>

<span class="normal">        </span><span class="comment">// read data and compute statistics</span>
<span class="normal">        </span><span class="keyword">while</span><span class="normal"> </span><span class="symbol">(!</span><span class="normal">StdIn</span><span class="symbol">.</span><span class="function">isEmpty</span><span class="symbol">())</span><span class="normal"> </span><span class="cbracket">{</span>
<span class="normal">            </span><span class="type">double</span><span class="normal"> value </span><span class="symbol">=</span><span class="normal"> StdIn</span><span class="symbol">.</span><span class="function">readDouble</span><span class="symbol">();</span>
<span class="normal">            sum </span><span class="symbol">+=</span><span class="normal"> value</span><span class="symbol">;</span>
<span class="normal">            count</span><span class="symbol">++;</span>
<span class="normal">        </span><span class="cbracket">}</span>

<span class="normal">        </span><span class="comment">// compute the average</span>
<span class="normal">        </span><span class="type">double</span><span class="normal"> average </span><span class="symbol">=</span><span class="normal"> sum </span><span class="symbol">/</span><span class="normal"> count</span><span class="symbol">;</span>

<span class="normal">        </span><span class="comment">// print results</span>
<span class="normal">        StdOut</span><span class="symbol">.</span><span class="function">println</span><span class="symbol">(</span><span class="string">"Average is "</span><span class="normal"> </span><span class="symbol">+</span><span class="normal"> average</span><span class="symbol">);</span>
<span class="normal">    </span><span class="cbracket">}</span>
<span class="cbracket">}</span>

<span class="comment">/******************************************************************************</span>
<span class="comment"> *  Copyright 2002-2015, Robert Sedgewick and Kevin Wayne.</span>
<span class="comment"> *</span>
<span class="comment"> *  This file is part of algs4.jar, which accompanies the textbook</span>
<span class="comment"> *</span>
<span class="comment"> *      Algorithms, 4th edition by Robert Sedgewick and Kevin Wayne,</span>
<span class="comment"> *      Addison-Wesley Professional, 2011, ISBN 0-321-57351-X.</span>
<span class="comment"> *      </span><span class="url">http://algs4.cs.princeton.edu</span>
<span class="comment"> *</span>
<span class="comment"> *</span>
<span class="comment"> *  algs4.jar is free software: you can redistribute it and/or modify</span>
<span class="comment"> *  it under the terms of the GNU General Public License as published by</span>
<span class="comment"> *  the Free Software Foundation, either version 3 of the License, or</span>
<span class="comment"> *  (at your option) any later version.</span>
<span class="comment"> *</span>
<span class="comment"> *  algs4.jar is distributed in the hope that it will be useful,</span>
<span class="comment"> *  but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<span class="comment"> *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the</span>
<span class="comment"> *  GNU General Public License for more details.</span>
<span class="comment"> *</span>
<span class="comment"> *  You should have received a copy of the GNU General Public License</span>
<span class="comment"> *  along with algs4.jar.  If not, see </span><span class="url">http://www.gnu.org/licenses.</span>
<span class="comment"> ******************************************************************************/</span>
</tt></pre>

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Last updated: Mon Mar 21 10:51:08 EDT 2016.
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